Allen-Bradley 842E-MIP3BA Encoder Ethernet Module

Allen-Bradley’s 842E-MIP3BA is an EtherNet/IP absolute encoder that delivers high-resolution rotary position data over a factory network, providing 262,144 counts per revolution (18-bit resolution) with built-in multi-turn tracking for persistent absolute position. It features a 10 mm solid shaft with a flat, a shielded M12 connector, and a supply range of 10 to 30 V DC. The unit communicates over EtherNet/IP and supports Device Level Ring (DLR) for an alternative data path in case of a segment fault, improving redundancy on automated lines. Rated for up to 9,000 rpm, it suits high-speed positioning tasks in robotics, CNC equipment, packaging, and material-handling systems, and it integrates with Rockwell Automation control platforms for smooth configuration within CIP Motion or other motion-oriented control schemes. As part of the 842E family, the MIP3BA model emphasizes absolute encoding with network compatibility, enabling immediate position reporting after power-up without re-homing. Common use cases include servo feedback in motion-control loops, networked feedback for automated assembly lines, and machine-tending applications where precise, networked position feedback is critical.